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A 6.11g sample of Cu-?Zn alloy reacts with excess aqueous HCl producing 1.26 L of H2(g) at 22.0 ?C and 728 torr. Since only the Zn portion of the alloy reacts, calculate the percent Cu in the alloy.
A biochemical engineer isolates a bacterial gene fragment and dissolves a 10.9 mg sample of the material in enough water to make 36.5 mL of solution. The osmotic pressure of the solution is 0.340 torr at 25°C. (a) What is the molar mass of the gen..
The product of the final step in the synthesis below are acetone and acetaldehyde. What are the identities of compounds A and B?
How many grams of chromium metal can be formed if a 0.500 amp current is passed through a solution of Cr3+ for a period of 45.0
Calculate Ka for hydrogen peroxide. you may use the reactions given on the data sheet, Kw=1.0x10^-14. Assume that hydrogen peroxide is a monoprotic acid.
What is the volume of the container needed to store 0.8 moles of argon gas at 5.3 atm and 227°C.
What mass of propane gas, C3H8, will occupy 860. mL at 880. mm Hg and 81.0°C?
Calculate the boiling point of a solution prepared by dissolving 70.0 g of naphthalene, C10H8 (a nonvolatile nonelectrolyte), in 220.0 g of benzene, C6H6. The Kb for benzene = 2.53°C/m. The boiling point of pure benzene is 80.1°C.
what volume of bleach (6%w/v=6g/100ml) would be required to oxidize 5.0 mL of methanol (density 0.890 g/ml) to methanone?
The simplest carbene known is methylene. The non-bonded electrons can be paired (singlet methylene) or unpaired (triplet methylene).
If 69.5 kJ of heat is applied to a 1025 g block of metal, the temperature of the metal increases by 11.4°C. Calculate the specific heat capacity of the metal in J/g°C.
What is the freezing point of a solution containing 3.10 grams benzene (78.11 g/mol) dissolved in 32.0 grams paradichlorobenzene
What is the mass of a square piece of aluminum foil 100 micrometers thick and 10 cm wide? (Aluminum=2.7 g/cm^3)
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